<div class="input-group">
    <span data-field="selector"></span>
    <span class="input-group-btn">
            <button data-field="showCalendarBtn" data-toggle="popover" data-trigger="hover" title="" data-placement="top" data-container="body" class="btn btn-default" type="button">
               <span class="fa fa-calendar"></span>
            </button>
            <button data-field="clearBtn" data-toggle="popover" data-trigger="hover" title="" data-placement="top" data-container="body" class="btn btn-default" type="button">
                <span class="pficon pficon-close"></span>
            </button>
        </span>
</div>